Adaptive User Presence Detection Using Wireless Signaling

This disclosure relates generally to Information Handling Systems (IHSs), and more specifically, to user presence detection by IHSs.

As the value and use of information continues to increase, individuals and businesses seek additional ways to process and store it. One option available to users is an Information Handling System (IHS). An IHS generally processes, compiles, stores, and/or communicates information or data for business, personal, or other purposes thereby allowing users to take advantage of the value of the information. Because technology and information handling needs and requirements vary between different users or applications, IHSs may also vary regarding what information is handled, how the information is handled, how much information is processed, stored, or communicated, and how quickly and efficiently the information may be processed, stored, or communicated.

Variations in IHSs allow for IHSs to be general or configured for a specific user or specific use, such as financial transaction processing, airline reservations, enterprise data storage, or global communications. In addition, IHSs may include a variety of hardware and software components that may be configured to process, store, and communicate information and may include one or more computer systems, data storage systems, and networking systems.

IHSs may support a variety of technologies that may be used in determining the location of the user relative to the IHS, thus supporting the ability to identify scenarios such as when a user of the IHS is no longer in close proximity to the IHS, or when multiple individuals in are in close proximity to the IHS. Complex user presence detection capabilities typically utilize telemetry data collected from multiple sensors of an IHS, such as utilizing data collected by time-of-flight sensors and images captured by cameras. However, in many scenarios, such sensors and/or processing resources required to implement complex user detection capabilities are not available in some IHSs and/or are not always available.

In various embodiments, systems and methods provide adaptive user presence detection by a first Information Handling System (IHS). Embodiments may include: transmitting and receiving wireless communications with a second IHS using a wireless network controller of the first IHS; determining a context in which the IHS transmits and receives the wireless communications with the second IHS; based on the context of the wireless communications, selecting a wireless signaling profile for use by the wireless network controller in the wireless communications with the second IHS, wherein the selected wireless signaling profile adapts the transmission and reception of the wireless communications with the second IHS in supporting different types of user presence detection by the IHS; and using the wireless communications that have been adapted according to the wireless signaling profile to locate a user of the IHS relative to the IHS.

In some embodiments, the IHS comprises at least two antennas for the transmission and reception of the wireless communications, and wherein the selected wireless signaling profile adapts the transmission and reception by the antennas in order to support a specific type of user presence detection. In some embodiments, the specific type of user presence detection comprises detecting whether the user is located within a proximity to the IHS. In some embodiments, the context in which the IHS transmits and receives the wireless communications with the second IHS comprises a low power mode of the IHS. Some embodiments may include waking the IHS from the low power mode in response to locating the user of the IHS within the proximity to the IHS using the wireless signaling profile. In some embodiments, the specific type of user presence detection comprises detecting gestures made by the user. In some embodiments, the context in which the IHS transmits and receives the wireless communications with the second IHS comprises an application of the IHS operating in a presentation mode. Some embodiments may include conducting an operation of the presentation mode in response to detecting a gesture made by the user through use of the wireless signaling profile. In some embodiments, the specific type of user presence detection comprises detecting whether the user's hands are located in proximity to the IHS. In some embodiments, the context in which the IHS transmits and receives the wireless communications with the second IHS comprises a level of ambient light detected by the IHS. Some embodiments may include illuminating lighting of the IHS in response to detecting the user's hands in proximity to the IHS. In some embodiments, the wireless network controller of the first IHS uses the selected wireless signaling profile to adapt the transmission and reception of the wireless communications with the second IHS in supporting different types of user presence detection by the IHS. In some embodiments, the selected wireless signaling profile adapts the transmission and reception of the wireless communications with the second IHS by utilizing directional wireless signaling information provided by the second IHS. In some embodiments, the selected wireless signaling profile adapts the transmission and reception of the wireless communications with the second IHS by modifying directional wireless signaling information generated by the two or antennas in the transmission and reception of wireless communications with the second IHS. In some embodiments, the selected wireless signaling profile adapts the transmission and reception by the two or more antennas in order to support a specific type of user presence detection by modifying sensitivity settings used by the antennas in the reception of wireless communications from the second IHS.

For purposes of this disclosure, an Information Handling System (IHS) may include any instrumentality or aggregate of instrumentalities operable to compute, calculate, determine, classify, process, transmit, receive, retrieve, originate, switch, store, display, communicate, manifest, detect, record, reproduce, handle, or utilize any form of information, intelligence, or data for business, scientific, control, or other purposes. For example, an IHS may be a personal computer (e.g., desktop or laptop), tablet computer, mobile device (e.g., Personal Digital Assistant (PDA) or smart phone), server (e.g., blade server or rack server), a network storage device, or any other suitable device and may vary in size, shape, performance, functionality, and price. An example of an IHS is described in more detail with regard to.

is a diagram illustrating examples of components of an Information Handling System (IHS) configured, according to some embodiments, to support adaptive user presence detection by the IHS through adaptive configuration of wireless signaling by the IHS. In some embodiments, IHSmay be a laptop computer with wireless network communication capabilities. In some embodiments, the wireless networking capabilities of IHSmay be implemented using multiple antenna, thus providing a source of directional information regarding the wireless signals that are transmitted and received by the IHS. As described in additional detail below, in embodiments, IHSmay be configured to support adaptive user presence detection using wireless signaling information, where the presence detection capabilities are adapted through selection of profiles used for analysis of the available wireless signaling information in providing different types of user presence detection. Depending on the current operating context of the IHS, the selection of different profiles adjusts wireless signaling by the IHS in order to adjust the type of user presence detection to be conducted.

As illustrated, IHSincludes host processor(s). In various embodiments, IHSmay be a single-processor system, a multi-processor system including two or more processors and/or processor cores. Host processor(s)may include any processor capable of executing program instructions, such as a PENTIUM processor, or any general-purpose or embedded processor implementing any of a variety of Instruction Set Architectures (ISAs), such as an x86 or a Reduced Instruction Set Computer (RISC) ISA (e.g., POWERPC, ARM, SPARC, MIPS, etc.). IHSutilizes a chipsetthat may include one or more integrated circuits that are connected to processor. In the embodiment of, processoris depicted as separate component from chipset. In other embodiments, all of chipset, or portions of chipsetmay be implemented directly within the integrated circuitry of the processor. Chipsetprovides the processor(s)with access to a variety of resources of the IHS.

In some embodiments, processormay include an integrated memory controller that may be implemented directly within the circuitry of the processor, or the memory controller may be a separate integrated circuit that is located on the same die as the processor. The memory controller may be configured to manage the transfer of data to and from the system memoryof the IHSvia a high-speed memory interface. The system memoryprovides the processorwith a high-speed memory that may be used in the execution of computer program instructions by the processor. Accordingly, system memorymay include memory components, such as such as static RAM (SRAM), dynamic RAM (DRAM), NAND Flash memory, suitable for supporting high-speed memory operations by the processor. In certain embodiments, system memorymay combine both persistent, non-volatile memory and volatile memory. In certain embodiments, the system memorymay be comprised of multiple removable memory modules.

As illustrated, a variety of resources may be coupled to the processor(s)of the IHSthrough the chipset. For instance, chipsetmay be coupled to a wireless network controllerthat may support different types of wireless network connectivity. In certain embodiments, wireless network controllermay include one or more Network Interface Controllers (NICs). In some embodiments, wireless network controllermay implement hardware for communicating via a specific networking technology, such as Wi-Fi, BLUETOOTH, and mobile cellular networks (e.g., CDMA, TDMA, LTE). In some embodiments, network controllermay support wireless Wi-Fi communications, and my include a Wi-Fi controller or wireless NIC card by which IHStransmits and receives wireless Wi-Fi signals.

As indicated in, the wireless signaling utilized by wireless network controllermay be implemented using multiple wireless antenna. In transmitting and receiving wireless signals using multiple antenna, the strength of signals that are received by each of these antennamay be analyzed to provide directional information regarding the environment in which the wireless signals are propagated. In some embodiments, the directional information that is used in the transmission and reception of wireless signals from each of the antennamay be used to detect the presence of the user of the IHSrelative to the position of the IHS itself.

As described in additional detail below, in some embodiments, specific types of user presence detection may be implemented, where the different types may each be implemented through analysis of wireless signal information from each of the multiple antenna. In embodiments, the different types of user presence detection that are supported by wireless network controllermay be selected according to the current operating context of the IHS, where the context information may be provided by sensor huband/or embedded controller. The directional wireless signal information from each of the multiple antennamay be used to implement different types of user presence detection, such as detecting the presence of the user in proximity to the IHS, detecting the presence of onlookers, detecting the user's hands near the IHS and detecting gestures being made by the user. Accordingly, in embodiments, different wireless signal profiles may be selected for use by wireless network controllerin providing one of these different types of user presence detection, where the profile is selected based on the current operating context of the IHS.

Returning to the hardware and software of an IHS according to embodiments, chipsetalso provides processorwith access to one or more storage drives. In various embodiments, storage drivesmay be integral to the IHS, or may be external to the IHS. In some embodiments, storage drive(s)may be accessed via a storage controller that may be an integrated component of the storage device. In some embodiments, a storage controller may be a system-on-chip function of processor(s). Storage drive(s)may be implemented using any memory technology allowing IHSto store and retrieve data. For instance, storage drive(s)may be a magnetic hard disk storage drive or a solid-state storage drive. In certain embodiments, storage drive(s)may include a system of storage devices, such as a cloud drive accessible via network interface.

As illustrated, IHSalso includes a BIOS (Basic Input/Output System)that may be stored in a non-volatile memory accessible by chipset. In some embodiments, BIOSmay be implemented using a dedicated microcontroller coupled to the motherboard of IHS. In some embodiments, BIOSmay be implemented as operations of embedded controller. Upon powering or restarting IHS, processor(s)may utilize BIOSinstructions to initialize and test hardware components coupled to the IHS. The BIOSinstructions may also load an operating system for use by the IHS. The BIOSprovides an abstraction layer that allows the operating system to interface with certain hardware components of the IHS. The Unified Extensible Firmware Interface (UEFI) was designed as a successor to BIOS. As a result, many IHSs utilize UEFI in addition to or instead of a BIOS. As used herein, BIOS is intended to also encompass UEFI.

In various embodiments, one or more display devicesmay be coupled to IHS. Display device(s)may include a plurality of pixels that are arranged in a matrix and are configured to display visual information. Display device(s)may include Liquid Crystal Display (LCD), Light Emitting Diode (LED), organic LED (OLED), or other thin film display technologies. IHSmay support an integrated display device, such as a display integrated into a laptop, tablet, 2-in-1 convertible device, or mobile device. In some embodiments, IHSmay be a hybrid laptop computer that includes dual integrated displays incorporated in both of the laptop panels. IHSmay also support use of one or more external displays, such as external monitors that may be coupled to IHSvia various types of couplings. In some embodiments, chipsetmay provide access to one or more display device(s)via a graphics processor and/or GPU (Graphics Processor Unit). In certain embodiments, a graphics processor may be comprised within a video or graphics card or within an embedded controller installed within IHS. In certain embodiments, a graphics processor may be integrated within processor, such as a component of a system-on-chip.

In some embodiments, one or more of the display devicesmay be capable of receiving touch inputs from a user. In some embodiments, these touch inputs received via display devicesmay be processed by a touch controllerthat may be separate from other controllers used the display of content. In some embodiments, the touch controllerfunctions may be implemented by a display controller. In some embodiments, touch controllermay be an embedded component of an individual display device, such that IHSmay support multiple distinct touch controllers, each processing inputs from a separate display device, such as integrated touch controllersprocessing inputs from separate display panels of a laptop IHS.

Chipsetmay also provide access to one or more user input devices, in some instances using one or more I/O controller(s)or the like. Examples of user input devices include, but are not limited to a touchpad (such as a touchpad integrated in the palm rest area of a laptop IHS), keyboardB and mouseC. In some embodiments, a single controller may support multiple of these user input devices, such as a keyboard controller that detects inputs from the keyboardB and also detects inputs from a touchpadintegrated in the palm rest, and also detects mouseC inputs detected by buttons included on or under a palm rest of an laptop IHS. In some embodiments, other user input devices supported through the operation of I/O controller(s)may include a stylus, microphone(s) and camera(s) that may each be integrated or external components of an IHS.

Some IHSembodiments may utilize an embedded controllerthat may be a motherboard component of IHSand may include one or more logic units. In certain embodiments, embedded controllermay operate from a separate power plane from the main processorsof IHS, and thus from the operating system functions of IHS. In some embodiments, firmware instructions utilized by embedded controllermay be used to operate a secure execution environment that may include operations for providing various core functions of IHS, such as power management and management of certain operating modes of IHS.

For instance, embedded controllermay implement operations for interfacing with a power supply unit (PSU)in managing power for IHS. In certain instances, the operations of embedded controller may determine the power status of IHS, such as whether IHSis operating strictly from battery power, whether any charging inputs are being received by power supply unit, and/or the appropriate mode for charging the one or more battery cells of the IHS using the available charging inputs. Embedded controllermay support routing and use of power inputs received via a USB port and/or via a power port supported by the power supply unit. In addition, operations of embedded controllermay interoperate with power supply unitin order to provide battery status information, such as the state of charge of the battery.

In some embodiments, embedded controllermay also implement operations for detecting certain changes to the physical configuration of IHSand managing the modes corresponding to different physical configurations of IHS. For instance, where IHSis a laptop computer or a convertible laptop computer, embedded controllermay receive inputs from a lid position sensor that may detect whether the two sides of the laptop have been latched together, such that the IHS is in a closed position. In response to lid position sensor detecting latching of the lid of IHS, embedded controllermay initiate operations for shutting down IHSor placing IHS in a low-power mode. In this manner, IHSmay support the use of various power modes.

In managing the operation of IHSaccording to its physical posture, embedded controllermay identify any number of IHS physical postures, including, but not limited to: laptop, stand, tablet, or book postures. For example, when an integrated displayof IHSis open with respect to a horizontal, face-up position of an integrated keyboard, ECmay determine IHSto be in a laptop posture. When an integrated displayof IHSis open with respect to a horizontal keyboard portion, but the keyboard is facing down (e.g., its keys are against the top surface of a table), ECmay determine IHSto be in a kickstand posture. When the back of an integrated displayis closed against the back of the keyboard portion of an IHS, ECmay determine IHSto be folded in a tablet posture. When IHShas two integrated displaysthat are open side-by-side (e.g., in a hybrid laptop with displays in both panels), ECmay determine an IHSto be in a book posture. When an IHSis determined to be in a book posture, ECmay also determine if the display(s)of IHSare arranged in a landscape or portrait orientation, relative to the user.

IHSmay include a wide variety of sensorsfor use in gathering telemetry data that can be used in the management of operations by the IHS. Sensorsmay be disposed on or within the chassis of IHS, or otherwise coupled to IHS, and may include, but are not limited to: electric, magnetic, radio, optical (e.g., camera, webcam, etc.), infrared, thermal (e.g., thermistors etc.), force, pressure, acoustic (e.g., microphone), ultrasonic, proximity, position, deformation, bending, direction, movement, velocity, rotation, gyroscope, Inertial Measurement Unit (IMU), and/or acceleration sensor(s). Sensorsmay include geo-location sensors capable for providing a geographic location for IHS, such as a GPS sensor or other location sensors configured to determine the location of IHSbased on triangulation and network information. Various sensors, such as optical, infrared and sonar sensors, may be used in the detection of individuals in proximity to the IHSand/or in other forms of user presence detection. However, the use of such sensors for user presence detection may be limited or unavailable in some scenarios in which the IHS operates, such as the IHS operating without use of the camera due to privacy restrictions that are currently in place. Certain line of sight sensors, such as an infrared sensor, may not be available on entry-level IHS. Accordingly, as described in additional detail below, in embodiments, user presence detection may be provided using solely wireless signal information, and thus by network controller.

In some embodiments, sensor hubmay utilize data from inertial movement sensors, that may include accelerometer, gyroscope, and magnetometer sensors, to determine the current orientation and any movement of IHS(e.g., IHSis motionless on a relatively flat surface, IHSis being moved irregularly and is likely in transport, the hinge of IHSis oriented in a vertical direction). In certain embodiments, the sensor hubmay also include capabilities for determining a location and movement of IHSbased on triangulation of network signal and based on network information provided by the OS or by a network interface.

In some embodiments, an IHSmay not include all of the components shown in. In other embodiments, an IHSmay include other components in addition to those that are shown in. Furthermore, some components that are represented as separate components inmay instead be integrated with other components. For example, in certain embodiments, all or a portion of the operations executed by the illustrated components may instead be provided by components integrated into processor(s)as systems-on-a-chip.

is a diagram illustrating additional examples of components of an Information Handling System (IHS) configured, according to some embodiments, to support adaptive user presence detection by the IHS through adaptive configuration of wireless signaling by the IHS. As described, in embodiments, IHSmay be configured to support adaptive user presence detection using wireless signaling information. In, wireless network controller, such as a Wi-Fi controller, supports user presence detectionthrough the use of directional information collected by the multiple antennautilized by the wireless network controller in wireless signaling

In some embodiments, wireless network controllermay support Wi-Fi communications through wireless signalingthat transmits and receives wireless signals using two or more antenna. This wireless signalingby wireless network controllermay provide IHSwith wireless network communications using the multiple antennathrough multipath signaling that MIMO (multiple-input and multiple-output) wireless transmissions. Through such MIMO wireless transmissions from each of the antenna, directional information may be calculated based on the different signal properties detected by the different antenna. Using OFDMA (Orthogonal Frequency-Division Multiple Access), multiple transmission channels are transmitted simultaneously in wireless communications, such as some standardized Wi-Fi versions. In optimizing the use of available transmission channels within the constraints of the physical environment in which the wireless signals are being propagated, participants may generate CSI (channel state information) for use in separately optimizing the capacity of each of the channels.

In some embodiments, changes in channel state information collected by each of the antennamay be analyzed to identify the location of other wireless transceiversand to locate obstacles, such as the user, within the propagation environment. Through the analysis of such wireless channel information collected by each of the antenna, the user presence detectionfunction of wireless network controllermay locate the user relative to the IHS. As described in additional detail below, embodiments may support different types of user presence detection, where support for the supported types of presence detection capabilities are adapted through selection of profilesthat are used by the wireless network controllerin the analysis of the available wireless signaling information in providing different types of user presence detection.

Depending on the current operating context of the IHS, the selection of different profilesadjusts wireless signaling by the IHS in order to adjust the type of user presence detection to be conducted. In some embodiments, the different profilesmay adjust the transmission and reception parameters used in wireless signalingby the network controller. For instance, different profilesmay configure the use of different reception sensitivities used by some or all of the antennain order to collect different channel state information describing different areas relative to the IHs, such as to adjust sensitivities to detect obstacles very near to the IHS, such as detecting the user'shands near the keyboard of a laptop IHS, or such as to adjust transmission power to detect the general presence of a userin the same room as the IHS.

As described above, an IHS may include a sensor hubthat may interface with one or more sensorsand other sources of information (e.g., cameras, infrared sensors, time-of-flight sensors, microphones, etc.) in performing various evaluations of the IHS operating state. In some instance, a sensor hubmay synthesize telemetry collected from multiple sensorsin supporting multi-sensor user presence detectionb. In some instances, the data collected and analyzed in multi-sensor user presence detectionb by the sensor hubmay include wireless signaling data collected by a wireless sensing drivera of the sensor hub. However, as described, in some IHSs such as entry-level IHSs, such complex sensor hub implementations of user presence detection are not available. In some instances, an IHS may include a sensor hubthat is capable of multi-sensor user presence detectionb, but such capabilities are not available, such as due to privacy restrictions, power limitations, etc. Accordingly, in embodiments, user presence detection is provided solely using wireless signalingdata collected by network controller.

is a flowchart illustrating an example of a method, according to some embodiments, for adaptive user presence detection by an IHS through adaptive configuration of wireless signaling by the IHS. Embodiments may begin, at, with the initialization of an IHS, such as upon booting or restarting the IHS. In some embodiments, upon initialization of an IHS, instructions to be loaded for use by hardware components of the IHS, such as firmware and other settings, may be validated as authentic based on comparisons of the instructions to be loaded against reference signatures corresponding to authentic instructions. Upon successful validation of such instructions, one or more of the hardware components of the IHSmay load validated instructions and may thus operate based on execution of these trusted instructions. In embodiments, this validated firmware to be loaded by components of the IHSmay include firmware for use in providing user presence detection capabilities that are implemented based on wireless signal information from multiple antennaand in selecting different profiles for using wireless signal information in providing different types of user presence detection depending on the current operating context of the IHS.

Once firmware instructions for use in embodiments have been validated, at, further initialization may include initiating the IHSboot sequence and loading operating system instructions. Once a requisite amount of instructions have been loaded and the IHS is in operation, at, embodiments may configure and initiate use of wireless signaling information for user presence detection. As described above, in embodiments, an IHSincludes two or more antenna used to transmit and receive wireless signals, such as Wi-Fi communications. In such wireless signaling that utilized multiple antenna, directional signal information may be used to detect the presence of the user relative to the IHS. Wireless communications such as Wi-Fi may be transmitted using multiple channels of data being transmitted simultaneously, where different channels may be transmitted orthogonal to each other, and thus affected differently by obstructions in the environment in which the signals are propagated.

In transmitting and receiving wireless signals using multiple antenna, the differing magnitudes of signal properties measured by the different antenna provides further directional information. As described above, the channel-specific signal information measured and used by each of the multiple antennamay be used in the detection of individuals in proximity to the IHS, including determining the location of an individual relative to the IHS. In some embodiments, such user presence detection based on wireless signal information may be initiated as a background process of the IHS.

As described above, different types of presence detection may be supported by embodiments through evaluation of wireless signal data, such as detecting the user being near the IHS, detecting the user's hands near the IHS and detecting specific gestures made by the user. Each of these different types of user presence detection may be used in different contexts of the IHS's operations. Accordingly, at, embodiments may determine the current operating context of the IHS for use in selecting the appropriate type of user presence detection to be provided. Embodiments may collect and utilize a variety of context information that may then be used in determining a specific type of user presence detection to be conducted using wireless signaling data.

In some embodiments, the IHS context may include ambient light measurements that are made using sensorsof the IHS. In an IHS such as a laptop computer with an integrated keyboard, some or all of the keys may include backlighting or other illumination that supports use of the IHS in low light environments. However, in most instances, once the keyboard has been illuminated, the keyboard lighting is turned off when no keypress is detected for a predefined interval, such that the illumination times out and power is conserved. In dark environments, a user must typically press a key in order to re-illuminate the keyboard. Such operations by the user can result in unintentional inputs to the IHS, such as closing an application, pausing on ongoing multimedia feed and/or deleting information. Accordingly, embodiments may utilize ambient light measurements to select a type of user presence detection that can be used to initiate keyboard lighting once the user's hands are detected in proximity to the IHS, and in particular in proximity to the keyboard of the IHS.

In some embodiments, the IHS context may include the application(s) that are operating on the IHS, and in some instances any specific modes or states of these applications. For instance, in a scenario where an IHS is running an application that is currently in a presentation mode, and/or the IHS is coupled to an external projector, embodiments may select a type of user presence detection that can be used to detect specific gestures by the user. In response to detecting hand and/or arm gestures, the user is able to advance slides or pages within a presentation using only gestures and thus without the user having to break focus from the presentation.

In some embodiments, the IHS context may include the power mode or other power information of the IHS. For portable IHSs that operate using rechargeable batteries, context information may include: the state of charge of these batteries, whether the IHS is currently drawing power from the batteries, whether the IHS is currently coupled to an external power source and/or the current power mode of the IHS (e.g., sleep, hibernate, standby). In scenarios where the IHSis in a low power mode, embodiments may select a type of user presence detection that can used to detect the user in the general proximity of the IHS (e.g., in the same room as the IHS), thus allowing the IHS to preemptively transition to a ready power mode in anticipation of the user approaching the IHS.

In some embodiments, the IHS context may include the location of the IHS. In a private location, such as a home or office setting, privacy protections supported by an IHSmay not be enabled. For instance, an IHSmay support privacy measures such as screen blurring that are intended to prevent onlookers from viewing protected information that is being displayed. In scenarios where such onlooker mitigation procedures are being utilized, such as due to the IHS being used in a public or otherwise unknown location, embodiments may select a type of user presence detection that can used to detect the presence of multiple individuals in close proximity to the IHS.

In some embodiments, the IHS context may include the presence of multiple wireless signal transceivers, such as other IHSs, that are detected in the physical environment in which the user presence detection is being conducted. As described in additional detail below, user presence detection may be aided and improved when utilizing wireless signal information that is collected by different participating devicesthat are located in the physical environment where the useris located. Based on such context describing the specific wireless environment in which the IHS is operating, embodiments may select a wireless signaling configuration that is adapted to utilize the wireless signal information that can be provided by the different participating devices in the wireless environment, such as in support of detecting onlookers in the proximity to the IHS.

In some embodiments, context information indicating the presence of other participating transceiversin the environment may result in the selection of a wireless signaling profilethat incorporates information provided by these other transceiversin user presence detection. For instance, the detection of a transceiversthat can provide channel information describing directional information may result in the selection of a profilethat requests channel state information from a remote transceivers, thus providing additional directional information describing obstructions in the environment. Through use of this additional directional information, a wireless signal profile may be selected by embodiments that support detection of multiple individuals in proximity to the IHS, thus supporting capabilities such as onlooker detection. In environments where multiple different transceiversare present, a wireless signaling profile may be selected that leverages the availability of multiple sources of directional information to configure wireless signalingin a manner that sequences communications with each individual transceiversin a manner that generates spatial information that is targeted as specific areas relative to the IHS.

In this manner, embodiments may collect a variety of status information and telemetry describing the current operating context of the IHS. Once this context information has been collected, at, embodiments may determine a type of presence detection to be provided based on the current operating context. In the scenario described above, the ambient light context information may result in the selection of a type of user presence detection that detects the user's hands in proximity to the keyboard of the IHS. In the above-described scenario where the IHS context is a low power state, the selected type of user presence detection may be used to identify the location of the user relative to the IHS, such as measuring the distance between the user and the IHS in order to locate the user in the same room as the IHS and to anticipate the user moving towards the IHS in order to operate it. In the scenario described above where the IHS context includes a presentation-mode application being operated by the user, the selected type of user presence detection may be used to identify gestures made by the user. In the described scenario where the IHS context includes a public or otherwise untrusted location, the selected type of user presence detection may be utilize wireless signaling that is adapted to identify onlookers in proximity to the IHS.

Once the type of user presence detection has been selected, at, embodiments may select a wireless signaling profileto be used in providing the selected type of presence detection. As described, embodiments may identify the user relative to the IHS based on analysis of directional information calculated from data collected in the multi-channel transmission of wireless signal data by two or more antenna. In embodiments, the wireless signalingby the IHS may be further adjusted through use of each profilein order to identify the user in a particular manner. For instance, adjusting the sensitivity of one or more of the antenna of the IHS may be used in embodiments to tune the amount of data that is collected and available for detecting the presence of a user and/or identifying specific aspects of a user, such as gestures being made by the user. Different wireless signaling profilesmay additionally or alternatively adjust the transmission power used in wireless signaling in order to tune the distances at which the user can best be detected from the IHS using the signal information being collected by the antenna. As such, different wireless signaling profilesmay specify different antenna sensitivity and power configurations and other antenna settings to be used in providing a specific type of user presence detection, while still supporting wireless network communications by the IHS.

With the wireless signaling profileselected based on the current IHS operating context, at, the IHS initiates a specific type of presence detection using the selected wireless signaling configuration. In some embodiments, the wireless signaling profilemay specify transmission and reception settings such as sensitivity and power that may be used to generate wireless signal information in the physical area relative to the IHS in which the user's presence is to be monitored. Using the wireless signaling profile, embodiments may collect and evaluate wireless signaling data in order to locate the user relative to the IHS.

However, in some instances, at, the context in which the IHS operates may change prior to the user's presence being detected using the selected signaling profile. For instance, in the scenario where the IHS context includes ambient lighting sensors indicating the IHS being operated in a low light environment, that context may change due to a change in ambient lighting. Through this change in context, the need is obviated for user presence detection to monitor for the user's hands in proximity to the keyboard in order to trigger keyboard backlighting. Similarly, movement of an IHS from an unknown location to a trusted location may obviate the need for use of user presence detection to monitor for onlookers. In this same manner, a change in context that includes the user exiting a presentation mode of an active application obviates further monitoring for gestures through the use of wireless signaling presence detection. Accordingly, as indicated in, embodiments may return, at, to the selection of an appropriate type of user presence detection to be provided in the new operating context of the IHS. For instance, in a scenario where the context changes from the IHS transitioning to a full power mode of operations, the need is obviated for user presence detection to identify the user in proximity to the IHS in order to trigger wake operation. In the new context, low ambient light conditions may result in a switch to user presence detection for detecting the user's hands proximity to the IHS.

In some scenarios, at, the configured type of user presence detection is used in successfully detecting the location of the user relative to the IHS, gestures made by the user, the presence of onlookers and/or the position of the user's hands relative to the IHS. At, the IHS responds to the detected presence of the user. As described, in the scenario where the user's hands are detected in proximity to the IHS keyboard in a low ambient light context, the IHS responds by illuminating one or more of the keys of the keyboard. In the scenario where the user is detect in proximity to the IHS while the IHS is in a low power context, the IHS responds by waking the IHS, either fully or partially, in anticipation of the IHS resuming operation of the IHS. In the scenario where the user's hand and/or arm gestures are detected while the IHS is in a presentation mode context, the IHS responds to the detected gestures, such as by advancing the presentation to the next page. In the scenario where an onlooker is detected in proximity to the IHS while the IHS is in an untrusted physical environment context, the IHS responds by initiating onlooker mitigation procedures such as screen blurring.

Once the IHS responds to the detection of the user, as indicated in, embodiments may continue, at, by determining the current operating context of the IHS in order to select a type of user presence detection that is appropriate. Also as indicated in, in addition to trigging a response by the IHS, at, the detection of the user may also trigger training of a machine learning model that is used to adjust the parameters of each of the wireless signaling profilesthat are supported. For instance, when configured for detection of user gestures, the detection of a specific gesture and resulting response may be used as feedback training of a machine learning model such as a neural network, where the feedback confirms that the detected user movements did correspond to that specific gesture, thus improving the confidence of the neural network in future gesture determinations made based on similar data.

To implement various operations described herein, computer program code (i.e., program instructions for carrying out these operations) may be written in any combination of one or more programming languages, including an object-oriented programming language such as Java, Smalltalk, Python, C++, or the like, conventional procedural programming languages, such as the “C” programming language or similar programming languages, or any of machine learning software. These program instructions may also be stored in a computer readable storage medium that can direct a computer system, other programmable data processing apparatus, controller, or other device to operate in a particular manner, such that the instructions stored in the computer readable medium produce an article of manufacture including instructions which implement the operations specified in the block diagram block or blocks.

Program instructions may also be loaded onto a computer, other programmable data processing apparatus, controller, or other device to cause a series of operations to be performed on the computer, or other programmable apparatus or devices, to produce a computer implemented process such that the instructions upon execution provide processes for implementing the operations specified in the block diagram block or blocks.

Modules implemented in software for execution by various types of processors may, for instance, include one or more physical or logical blocks of computer instructions, which may, for instance, be organized as an object or procedure. Nevertheless, the executables of an identified module need not be physically located together but may include disparate instructions stored in different locations which, when joined logically together, include the module and achieve the stated purpose for the module. Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices.

Similarly, operational data may be identified and illustrated herein within modules and may be embodied in any suitable form and organized within any suitable type of data structure. Operational data may be collected as a single data set or may be distributed over different locations including over different storage devices.